/// <summary>
/// Helper method for populating the song list with songs.
/// </summary>
/// <param name="info">
/// The AlbumInfo-object the AlbumDetails-instance is based on.
/// </param>
private void PopulateSongList(AlbumInfo info)
{
foreach (var song in info.Songs)
{
var listItem = new ListViewItem(song.Title);
listItem.SubItems.Add(song.Artist);
listItem.SubItems.Add(song.Genre);
listItem.SubItems.Add(song.Price.ToString());
listItem.SubItems.Add(song.Duration.ToString());
songList.Items.Add(listItem);
}
}
/// <author>Kenneth Søhrmann</author>
/// <summary>
/// Convenience method for uploading an album and its songs to the
/// server.
/// The methods blocks during upload.
/// </summary>
/// <param name="credentials">
/// The credentials of the publisher who is uploading the specified album.
/// </param>
/// <param name="songs">
/// A list of SongInfoUpload-objects each representing the metadata of the songs
/// that is a part of the album.
/// </param>
/// <param name="albumInfo">
/// Instance holding the metadata of the album to be uploaded.
/// </param>
/// <exception cref="WebException">
/// Is thrown if the upload of one of the songs or the thumbnail failed.
/// </exception>
/// <exception cref="ArgumentException">
/// Is thrown if the credentials are not authorized.
/// </exception>
public static void UploadAlbum(Credentials credentials, List<SongInfoUpload> songs, AlbumInfoUpload albumInfo)
{
// Check specified song files
foreach (SongInfoUpload song in songs)
{
// If the filepath has not been stated, it is okay.
if (string.IsNullOrEmpty(song.FilePath))
{
continue;
}
if (!File.Exists(song.FilePath))
{
throw new ArgumentException("The file, " + song.FilePath + ", does not exist.");
}
if (!new FileInfo(song.FilePath).Extension.Equals(".mp3"))
{
throw new ArgumentException("The file, " + song.FilePath + ", does not have the supported extension, mp3.");
}
}
var serviceClient = GetServiceClient();
var accountCredentials = new AccountCredentials
{
UserName = credentials.UserName,
HashedPassword = credentials.HashedPassword
};
try
{
serviceClient.ValidateCredentials(accountCredentials);
}
catch (Exception)
{
throw new ArgumentException("Invalid credentials submitted.");
}
var albumMedia = new AlbumInfo()
{
Title = albumInfo.Title,
Type = MediaType.Album,
Genre = albumInfo.Genre,
Price = albumInfo.Price,
Publisher = albumInfo.Publisher,
ReleaseDate = albumInfo.ReleaseDate,
AlbumArtist = albumInfo.AlbumArtist,
Description = albumInfo.Description,
};
int albumMediaId = serviceClient.PublishMedia(albumMedia, accountCredentials);
// Upload the thumbnail of the album.
try
{
UploadThumbnail(albumMediaId, albumInfo, credentials);
}
catch (Exception e)
{
serviceClient.DeleteMedia(albumMediaId, accountCredentials);
throw new WebException("Upload failed: " + e.Message);
}
// For database clean up if upload fails.
var publishedSongs = new List<int>();
// Process each song file; upload data to database, and upload song files to
// server.
foreach (SongInfoUpload songInfo in songs)
{
var songMedia = new SongInfo()
{
Title = songInfo.Title,
Type = MediaType.Song,
Genre = songInfo.Genre,
Price = songInfo.Price,
Publisher = songInfo.Publisher,
ReleaseDate = songInfo.ReleaseDate,
AlbumId = albumMediaId, // Set the album media id to the one received when publishing the album metadata.
Artist = songInfo.Artist,
Duration = songInfo.Duration
};
// publish the metadata of the song to the server.
int songMediaId = serviceClient.PublishMedia(songMedia, accountCredentials);
// For rollback if upload of binary data fails.
publishedSongs.Add(songMediaId);
try
{
if (!string.IsNullOrEmpty(songInfo.FilePath))
{
UploadMediaFile(songInfo.FilePath, songMediaId, credentials);
}
if (songInfo.Thumbnail != null)
{
UploadThumbnail(songMediaId, songInfo, credentials);
}
}
catch (Exception e)
{
// Clean up server database upon upload failure.
foreach (int songId in publishedSongs)
{
serviceClient.DeleteMedia(songId, accountCredentials);
}
serviceClient.DeleteMedia(albumMediaId, accountCredentials);
throw new WebException("Upload failed: " + e.Message);
}
}
}
